Development of Cu added hot-rolled steel sheets with high cold formability and high hardenability by short-time heating
Development of Cu added hot-rolled steel sheets with high cold formability and high hardenability by short-time heating
- New search for: Kishida, K.
- New search for: Oda, M.
- New search for: Ikenaga, N.
- New search for: Takita, M.
- New search for: Akisue, O.
- New search for: Kishida, K.
- New search for: Oda, M.
- New search for: Ikenaga, N.
- New search for: Takita, M.
- New search for: Akisue, O.
Nippon Steel Corp. has developed a new hot-rolled steel sheet which is characterized by 1.0 to 1.6 % cooper addition to extra low carbon steel. This steel is worked while it is in a low strength state and thereafter the worked part is heat treated to increase the strength of it. The copper added steel sheet has a capability to increase tensile strength up to 600 Mpa level from 400 Mpa level by being heated to the temperature range of 750 to 950 K for less than 600 s. When copper remains in the solid solution state, the steel sheet exhibits as much formability as the conventional steel of the same strength level. The ductility ratio is higher than that of the conventional steel of the same strength level. This offers a greater freedom in the design of spot- weld structural joints. The fatigue properties of the base metal is as good as those of the conventional steel of the same strength level, and becomes much longer when heat treated.
Document information
Development of Cu added hot-rolled steel sheets with high cold formability and high hardenability by short-time heating
Entwicklung von kupferhaltigen warmgewalzten Stahlblechen mit hoher Kaltverformbarkeit und hoher Härtbarkeit durch Kurzzeiterwärmung
SAE-Papers ; Mar ; 1-7
1990
7 Seiten, 10 Bilder, 4 Tabellen, 3 Quellen
Conference paper
English
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